Air Throttle

directly control the power output of the engines, and come in the following models: Pulse Width Modulation (PWM) Throttles, Analog Throttles, and J1939 Throttles.

Custom Harness

is designed to allow an easy connection to be made between a piece of equipment and an electronic device. A custom harness can be built for many different purposes and can be made with many different connectors for easy connections to any type of equipment.

Cycle Indicators

are a very cost effective and easy to use lubrication monitoring device. It is a completely sealed device, specially made for industrial use. The highly visible indicator makes it easy for anyone to see and quickly determine the precise timing of the divider valve cycle.


performs Monitoring and Shutdown functions like No-Flow, Low-Flow or Excessive-Flow for Divider-Block Lubrication Systems.

Engine Controls

are used to operate all brands of electronic diesel engines, all brands of transmissions, air drilling equipment, and other oilfield service packages. These packages are custom built to ensure the controls and meters are designed to operate as per the specifications of the job

J1939 Products

uses a high-speed network for machines that operate at 250K baud rate. These products are capable of supporting control, information sharing, diagnostics, multiplexing, and proprietary communications.

Lubrication Monitors

use the newest microprocessor and transistor technologies to detect SLOW-FLOW and NOFLOW conditions by monitoring divider block lubrication systems. These are also used to display the total run-time hours and total oil consumption in pints.

Measuring Equipment

is used to check for the presence and magnitude of voltage, temperature, and also used to check the size of many different items. Many of these items are must-haves for any electronics expert!

Panel Meter

is a device that displays an input signal in either digital or analog form. Many panel meters include different options such as the ability to set off an alarm and transfer information to and from a computer.

Proximity Switches

are devices that are used to accurately monitor fluid or grease lubrication systems. They are completely sealed and specially manufactured for industrial use. The proximity switch is very easy to use an can be installed on either side of the divider block.

Purge Guns

are easy to use, lever action hand-pumped lubrication devices. It can be used to manually purge oil systems, test oil systems, or test the condition of a divider valve system.


are used to control mechanical/electrical transmissions from 6 speed to 8 speed. This will make for easier and smoother shifting on your transmission. We also develop shifters with a J1939 bus interface that allows your shifter to be automated by a computer

Time Clocks

are used to record different measures of time so that a record of a particular event can be timestamped. These clocks can be setup to record the month, the day, the date, the time, or any combination of these. Most applications require some type of time measurement, so a time clock is almost always needed.

Well Services Package

Whitlock Instrument specializes in engineering or reengineering many different types of well service packages. Some of the well service packages that can be designed and constructed are harness assemblies, remote control panels, dashes, relay panels, and more.